Safety gate for hoisting inclosures



SAFETY GATE FOR HOIS'IWAY INCLOSURES Filed May 31. 1930 0 &

M ATTORN Patented Nov. 3, 1931 UNITED STATES. PATENT OFFICE" FBEDERIC A.DAVIDSON, OI BAYSIDE, NEW YORK, ASSIGNOR TO AMERICAN SAFETY DIEIVICIE.00., OF NEW YORK, N. Y.,

A conrona'rron on NEW YORK SAFETY GATE FOR HOISTING INCLOSURESApplication filed May 31,

This invention'relates to safety gates for hoistway inclosures, and hasfor its general object and purpose to provide a simply constructed,durable and,eflicient adjustable gate particularly designed forapplication and use in connection with temporary inclosures for materialhoistways provided for the transportation of materials during theerection of a building. 1

It is amore particular object of the invention to provide an adjustablegate detachably mounted on the frame of the inclosure at one side of thefloor opening of the hoistway and which when in closed position,effectually prevents large, heavy objects being accidentally moved overthe floor into the hoistway opening and also provides a guard railpreventing the workmen from accidentally falling into the opening, theseveral parts of 1 the gate being so constructed and connected with eachother that the gate will be selfretained in its open position entirelyat-one side of the frame of the inclosure where it will not interferewith the free movements of the workmen in loading materials onto thehoisting platform.

With the above and other objects in view,

the invention consists in the improved safety gate for hoistwayinclosures and in the form,

construction and relative arrangement of its several parts as will behereinafter more fully described, illustrated in the accompanying drawins, and subsequently incorporated in the sub oined claims.

In the drawings, wherein I have disclosed one simple and practicalembodiment of the device, and in which similar reference charactersdesignate corresponding parts throughout the several views,-

Figure 1 is a front elevation, the gate being shown in full lines in itsclosed position and in dotted lines in its open position;

Fig. 2 is a view looking at right angles to Fig. 1, and

Fig. 3 is a horizontal sectional on the line 3-3 of Fig. 1.

The particular construction of the hoistway inclosure is fully describedand claimed in a co-pending application filed of even date herewith, nowissued as, Patent N 0.

view taken 1930. Serial No. 458,594.

1,799,959, on April 7, 1931. For purposes of this explanation, it willsuflice to state that this inclosure includes a knock-down framestructure composed of vertical tubular members 5 which are connected andrigidly supported by transverse and longitudinally extending tubularmembers ti and 7 respectively, detachably connected with the members 5by suitable coupling devices indicated at 8. At opposite sides of thehoistway opening in the floor of the building where the buildlngmaterials are to be loaded onto the hoistway platform, the longitudinalconnecting members 7 are provided only at the upper ends of the verticalmembers 5 so that the space between these vertical members at theirlower ends will be unobstructed during the loading of the hoistwayplatform. Normally, how ever, when materials are not being loaded on theplatform, the opposite open sides of the hoistway inclosure are closedby the gates which is adapted to be detachably secured to' one oftheupright orvertical frame members 5 by the clamping device shown at 10.The other arm of this angular member 9 extends inwardly from theframemember 5 and to the end thereof a tubular guard rail 11 ispivotally connected at one of its ends as shown'at 12. To this framemember 5 adjacent its lower end, a removable clamping device 13 isattached and carries a pivot stud 14 upon which a toe board 15 ispivotally supported at one of its ends for vertical swinging movement.To this toe board in spaced relation to its other end, the lower end ofa rod 16 is pivotally attached as at 17, the upper end of said rod beingpivotally connected to a collar 18 secured upon the guard said arm beingprovided with an upstanding in indicated at 21 between which and therame member '5, the end of the guard rail 11 is positioned.

From the above description, and uponreference to Fig. 1 of the drawings,it will be seen that when the gate is in its closed position the toeboard 15 extends horizontally adjacent to the floor surface across theopen side of-the hoistway inclosure between the lower ends of the spacedframe members 5. Thus, the possibility of bricks or other large, heavyobjects being accidentally moved over the floor surface into thehoistway opening and falling upon the workinenloading materials upon thehoistway platform at one of the lower floors is obviated. The guard rail11 extending horizontally between the member 9 and the supporting arm 19at a point spaced vertically above the toe board 15 will effectuallypreclude the possibility of the workmen accidentally falling into thefloor opening of the hoistway.

. When materials are to be loaded upon the hoistway platform, it' isonly necessary to swing the guard rail 11 upwardly upon the end of themember 9. Through the rod connection 16, the toe board 15 will also bepivotally swung upwardly from its supporting pivot 14 until the partsare disposed in substantially the position shown in dotted lines in Fig.1 where the guard rail 11 will rest against one of the transverse framemembers 6. In this position, it will be noted that the pivotalconnection between the end of rod 16 and collar 18 is outwardly of thepivot 12 connecting the life rail 11 with the end of member 9. orretained in its raised position against the tendency to swing downwardlyby gravity to the closed position. Therefore, seen that the pate isself-retained in the open position and it is unnecessary to provide anylatching or securing means therefor. In this open position of the gate,it is supported in a non-obstructing position so that it will not in anyway interfere with the free movements of the workmen in loading thematerials from the floor of a building onto the hoistway platform.

From the foregoing description considered in connection with theac'companying'drawings, it will be seen that I have provided a simplyconstructed and efliciently operating safety gate which can be quicklyassembled and applied to the frame structure of the hoistway inclosureduring the erection of the latter. The gate being largely constructed ofmetal, is substantially fire-proof, and while it is comparatively lightin weight it is exieedingly strong and durable in ts construcion.

While I have herein shown and described one simple and practicalembodiment of the invention, it will nevertheless,

Thus the toe board 15 will be held it will be be understood that thesame is susceptible of embodiment in various other alternativestructures, and I accordingly reserve the privilege of resorting to allsuch legitimate changes therein as may be fairly embodied within thespirit and scope of the invention as claimed.

I claim:

1. In combination with spaced vertical supports, a gate comprising upperand lower members pivotally mounted at one of their ends upon one ofsaid supports, an element pivotally connecting said members with eachother adjacent to their other ends, means on the other of said verticalsupports engaged by the latter end of said upper member in the closedposition of the gate, said gate members being vertically swung upwardlyto open position, and a stop fixed to said first-named support forengagement by the upper gate member and located with respect to thepivoted end of said member whereby the gate will be self-retained in itsopen position.

2. In a safety gatefor hoistway inclosures, in combination with thespaced vertical frame members at one side of the inclosure, an upperguard rail and a lower toe board pivotally mounted at one of their endsupon one of the vertical frame members, means pivotally connecting saidrail and toe board with each other adjacent to their other ends forunitary swinging movement to open and closed positions, means on theother of said vertical supports engaged by the latter end ofthe guardrail to support the gate in closed position, and a part fixed to thefirst-named vertical support engaged by said guard rail when the gate isswung to open position and located with respect to the pivoted end ofsaid guard rail whereby said connecting means acts to automaticallyretain the gate in its raised open position.

3. A safety gate for hoistway inclosures,-'

in combination with the spaced vertical frame members at one side of theinclosure, a gate comprising an upper guard rail and a lower toe board,means for detachably pivotally mounting said rail and toe board at oneof their ends upon one of said vertical frame members with the pivot ofsaid guard rail out of vertical alignment with the pivot of the toeboardand spaced inwardly therefrom, means pivotally connecting the guardrail and toe board with each other for unitary swinging movement to openand closed positions, means fixed to said frame member above the gateengaged by said guard rail as the gate is moved to open position wherebysaid connecting means automatically acts to sustain the gate in its openposition, and means secured to the'other of the frame members engaged bysaid guard rail to support said rail and the toe board intheirhorizontal closed position,

4. In combination with the spacedvertical frame members of a hoistwayinclosure, a safety gate comprising an upper uard rail and a lower toeboard, means for etachably pivotally mounting the toe board at one of1ts ends upon one of said frame members, an angular bar and means fordetachably clamping said bar at one of its ends to said frame member,the other end portion of the bar extending inwardly from said framemember and being pivotally connected with one end of said guard rail,means pivotally connecting said guard rail and toe board with eachother, means secured to the frame member engaged by the guard rail inthe upward swinging movement of the gate to open position and locatedwith respect to the pivoted ends of said guard rail and toe boardwhereby the connectlng means acts to automatically retain the guard railand toe board in open position, and means detachably mounted on theother of the frame members for supporting the gate in closed position.

In testimony that I claim the foregoing as my invention, I have signedmy name hereto. FREDERIG A. DAVIDSON.

